Stage-by-stage tightness-adjustable hair clip structure

ABSTRACT

A stage-by-stage tightness-adjustable hair clip structure includes a base plate, a leaf spring and a clip plate. Each end of the base plate is disposed with a pair of latch boards. Each end of the leaf spring is disposed with a pair of fork legs. Each end of the clip plate is disposed with a pair of latch lugs. One end of the hair clip can be a pivot end, while the other end thereof can be an openable end, whereby the hair clip is openable only at one end. Alternatively, both ends of the hair clip are openable ends, whereby the hair clip is openable at both ends. The tightness between the clip plate and the base plate is adjustable stage by stage according to the amount of a user&#39;s hair.

BACKGROUND OF THE INVENTION

The present invention relates to a stage-by-stage tightness-adjustablehair clip structure which can be opened at one single end or at bothends. The tightness of the hair clip can be adjusted stage by stageaccording to the amount of a user's hair.

Most of the conventional hair clips are composed of a base plate, a leafspring and a clip plate. Such hair clips are openable at one end ratherthan at both ends.

The earliest hair clip pertains to a one-stage hair clip which cannot beadjusted in tightness so that a user with less hair or more hair canhardly suitably use such hair clip. A multi-stage hair clip has beendeveloped to solve this problem. However, such hair clip can be onlyopened at one end rather than at both ends.

Moreover, it is known that the consumers include right-handed users andleft-handed users which use the hair clip by different way. The existinghair clips are all designed for the right-handed users, while therequirement of the left-handed users is always neglected. In addition,due to the limitation of the opening direction of the hair clip, theconventional hair clips are equipped with decorative articles in onesingle direction. Therefore, it is necessary to provide a hair clipwhich can be opened at both ends so that the requirements of both theright-handed users and left-handed users can be satisfied.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide astage-by-stage tightness-adjustable hair clip structure including a baseplate, a leaf spring and a clip plate. Each end of the base plate isdisposed with a pair of latch boards. Each end of the leaf spring isdisposed with a pair of fork legs. Each end of the clip plate isdisposed with a pair of latch lugs. Accordingly, the hair clip areopenable at both ends. The present invention includes five differentaspects as follows:

1. The latch board of the base plate is disposed with a row ofintercommunicated latch holes and the latch lug of the clip plate isdisposed with a tenon for selectively inserting into the latch holes andassembling the clip plate with the base plate, whereby the tightness ofthe hair clip can be adjusted as necessary.

2. A latch hook extends from the latch board of the base plate and thelatch lug of the clip plate is disposed with an engaging socket, wherebythe latch hook can be hooked in the engaging socket to assemble the clipplate with the base plate and the tightness between the clip plate andthe base plate is adjustable.

3. A latch arm extends from the latch board of the base plate forengaging with the engaging socket of the latch lug of the clip plate sothat the clip plate is assembled with the base plate and the tightnessbetween the clip plate and the base plate is adjustable.

4. The base plate is disposed with a rack and the leaf spring is alsodisposed with a cooperative rack, whereby a tenon of the clip plate canbe selectively engaged with the racks to assemble the clip plate withthe base plate and the tightness between the clip plate and the baseplate is adjustable.

5. A rack extends from the fork leg of the leaf spring for engaging withthe engaging socket of the clip plate, whereby the clip plate isassembled with the base plate and the tightness between the clip plateand the base plate is adjustable.

The openable end of each of the above aspects can be replaced by aconventional pivot end to form a hair clip which is openable only at oneend.

The present invention has the following advantages:

1. The hair clip of the present invention can be opened at both ends intwo directions so that both right-handed users and left-handed users canuse the hair clip.

2. The tightness of the hair clip can be adjusted stage by stageaccording to the amount of the user's hair.

3. The decorative articles can be disposed on the hair clip in at leasttwo directions.

The present invention can be best understood through the followingdescription and accompanying drawing, wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a perspective exploded view of a first embodiment of a firstaspect of the hair clip of the present invention;

FIG. 1B is a perspective assembled view according to FIG. 1A;

FIG. 1C is a sectional view taken along line E—E of FIG. 1B;

FIG. 2A is a perspective exploded view of a second embodiment of thefirst aspect of the hair clip of the present invention;

FIG. 2B is a perspective assembled view according to FIG. 2A;

FIG. 2C is a sectional view taken along line F—F of FIG. 2B;

FIG. 3A is a perspective exploded view of a third embodiment of thefirst aspect of the hair clip of the present invention;

FIG. 3B is a perspective assembled view according to FIG. 3A;

FIG. 3C is a sectional view taken along line G—G of FIG. 3B;

FIG. 4A is a perspective exploded view of a fourth embodiment of thefirst aspect of the hair clip of the present invention;

FIG. 4B is a perspective assembled view according to FIG. 4A;

FIG. 4C is a sectional view taken along line H—H of FIG. 4B;

FIG. 5A is a perspective exploded view of a first embodiment of a secondaspect of the hair clip of the present invention;

FIG. 5B is a perspective assembled view according to FIG. 5A;

FIG. 5C is a sectional view taken along line I—I of FIG. 5B;

FIG. 6A is a perspective exploded view of a second embodiment of thesecond aspect of the hair clip of the present invention;

FIG. 6B is a perspective assembled view according to FIG. 6A;

FIG. 6C is a sectional view taken along line J—J of FIG. 6B;

FIG. 6D is a sectional view taken along line K—K of FIG. 6B;

FIG. 7A is a perspective exploded view of a first embodiment of a thirdaspect of the hair clip of the present invention;

FIG. 7B is a perspective assembled view according to FIG. 7A;

FIG. 7C is a sectional view taken along line L—L of FIG. 7B;

FIG. 7D is a top view of right end of the hair clip of FIG. 7B;

FIG. 8A is a perspective exploded view of a second embodiment of thethird aspect of the hair clip of the present invention;

FIG. 8B is a perspective assembled view according to FIG. 8A;

FIG. 8C is a sectional view taken along line M—M of FIG. 8B;

FIG. 8D is a top view of right end of the hair clip of FIG. 8B;

FIG. 9A is a perspective exploded view of a first embodiment of a fourthaspect of the hair clip of the present invention;

FIG. 9B is a perspective assembled view according to FIG. 9A;

FIG. 9C is a sectional view taken along line N—N of FIG. 9B;

FIG. 9D is a front view of right end of the hair clip of FIG. 9B;

FIG. 10A is a perspective exploded view of a first embodiment of a fifthaspect of the hair clip of the present invention;

FIG. 10B is a perspective assembled view according to FIG. 10A;

FIG. 10C is a sectional view taken along line 0—0 of FIG. 10B;

FIG. 11A is a perspective exploded view showing that the hair clip ofthe present invention is openable at one single end; and

FIG. 11B is a perspective assembled view showing that the hair clip ofthe present invention is openable at one single end.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 1A and 1B. According to a first embodiment of afirst aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

Each end of the base plate 1 is disposed with a latch board end 1 a.Each end of the leaf spring 2 is disposed with a latch fork end 2 a.Each end of the clip plate 3 is disposed with a latch lug end 3 a.

The latch board end 1(a) includes two latch boards 11 each of which isformed with a row of latch holes 12 communicated with each other. Thelatch lug end 3 a includes two latch lugs 31 defining a fissure 35. Afront lower side of each latch lug 31 is disposed with a downwardextending lug 32 having a tenon 33 on its surface. When the base plate1, leaf spring 2 and the clip plate 3 are assembled with each other, theV-shaped fork legs 21 of the latch fork end 2 a of the leaf spring 2 areinserted under the latch boards 11 with the root sections of the latchboards 11 engaged in the engaging recesses 22 of the fork legs 21. Themiddle arch section 23 of the leaf spring is inserted into the centralslot 34 of the clip plate 3. In addition, the tenons 33 of the clipplate 3 are inserted into the latch holes 12 of the latch boards 11 soas to achieve a clipping effect.

FIG. 1B shows the assembly of the hair clip, wherein the structure ofeach end of the hair clip is identical to the other so that the hairclip can be opened at both ends for a right-handed as well as aleft-handed users. Also, the decorative article of the base plate 1 canbe fixed in any direction. Moreover, the tenons 33 of the clip plate 3can be selectively inserted into the latch holes 12 of the latch boards11 at different heights so that the clip plate 3 can be adjusted upwardor downward relative to the base plate 1 for tightly clipping the user'shair.

FIG. 1C shows the opening procedure of the hair clip, wherein the latchlugs 31 of the clip plate 3 are compressed by two fingers to shorten thedistance between the latch lugs 31, whereby the tenons 33 are disengagedfrom the latch holes 12 of the latch boards 11. At this time, theresilience of the leaf spring 2 bounds the clip plate 3 away from thebase plate 1 to open the hair clip. During the opening procedure, afterone end of the hair clip is opened, the other end is then opened. Duringthe assembling procedure of the hair clip 10, one end thereof is firstlatched and then the other end is latched. The tightness of the hairclip can be adjusted by means of depressing two ends of the clip plate3, making the tenons 33 of the clip plate 3 downward move along thelatch holes 12.

Please refer to FIGS. 2A and 2B. According to a second embodiment of thefirst aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 1A and 1B only in thestructure of the clip plate 3. The latch lugs 31 of the clip plate 3 aredisposed at a position near the ends rather than at the ends. Thedownward extending lugs 32 are disposed behind the latch lugs 31. Eachend of the clip plate 3 is formed with a fissure 35 and an arch bridgingsection 36 across the fissure 35. Although the shape and structure ofthe clip plate 3 are different from those of the clip plate 3 of FIGS.1A and 1B, the engaging function of the clip plate 3 with the base plate1 and the leaf spring 2 is identical to that of the clip plate 3 ofFIGS. 1A and 1B.

When adjusting the tightness of the clip plate 3, the user only needs tocompress two ends of the clip plate 3, making the tenons 33 thereof movedownward along the latch holes 12. As shown in FIG. 2C, when the usercompresses the latch lugs 31 of the clip plate 3 to shorten the distancetherebetween via the fissure 35 and disengage the tenons 33 from thelatch holes 12 of the latch boards 11, the leaf spring 2 willresiliently bound the clip plate 3 from the base plate 1 to open thehair clip.

Please refer to FIGS. 3A and 3B. According to a third embodiment of thefirst aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 1A and 1B only in thestructure of two ends of the base plate 1 and the clip plate 3. Each endof the base plate 1 is formed with a bight folding plate 13. The centerof the folding plate 13 is formed with a projecting depression key 14.In addition, the latch boards 11 are inward arched. A stopper block 29is disposed on a lateral side of the fork leg 21 of the leaf spring 2.Each end of the clip plate 3 is disposed with a convex 37 instead of thelatch lugs. Each side of the convex 37 is disposed with a lug 32 havinga tenon 33 on its surface. Although the shape and structure of the baseplate 1 and clip plate 3 are different from those of the base plate andclip plate of FIGS. 1A and 1B, the engaging function of the base plate 1and clip plate 3 with the leaf spring 2 is identical to that of the baseplate and clip plate of FIGS. 1A and 1B.

When adjusting the tightness of the clip plate 3, the user only needs todepress the convex 37 of the clip plate 3, making the tenons 33 thereofmove downward along the latch holes 12. As shown in FIG. 3C, when theuser depresses the depression key 14 of the latch board end 1 a, thefront end of the folding plate 13 is upward biased to outward stretchthe arch latch boards 11, whereby the tenons 33 of the clip plate 3 aredisengaged from the latch holes 12 of the latch boards 11. At this time,the leaf spring 2 will resiliently bound the clip plate 3 from the baseplate 1 to open the hair clip.

Please refer to FIGS. 4A and 4B. According to a fourth embodiment of thefirst aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 1A and 1B only in thestructure of two ends of the leaf spring 2 and the clip plate 3. Thefork legs 21 of the leaf spring 2 are formed with reverse hook legs 25and the central arch section of the leaf spring 2 is replaced by a wellresilient winding section 24. The hook legs 25 are hooked at lower endsof the latch boards 11 of the base plate 1. The winding section 24provides good resilience and enhances the clipping force for the hair. Apair of elongated oblique latch lugs 38 are disposed at each end of theclip plate 3. Each side of the latch lug 38 is disposed with a tenon 33for adjustably inserting into the latch hole 12 of the latch board 11.Although the shape and structure of the leaf spring 2 and clip plate 3are different from those of FIGS. 1A and 1B, the engaging function ofthe leaf spring 2 and the clip plate 3 with the base plate 1 isidentical to that of the leaf spring and clip plate of FIGS. 1A and 1B.

When adjusting the tightness of the clip plate 3, the user only needs tocompress two ends of the clip plate 3, making the tenons 33 thereof movedownward along the latch holes 12. As shown in FIG. 4C, when the usercompresses the latch lugs 38 of the clip plate 3 to shorten the distancetherebetween, the tenons 33 will be disengaged from the latch holes 12of the latch boards 11. At this time, the leaf spring 2 will resilientlybound the clip plate 3 from the base plate 1 to open the hair clip.

Please refer to FIGS. 5A and 5B. According to a first embodiment of asecond aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 1A and 1B only in thestructure of two ends of the base plate 1 and the clip plate 3. A bentlatch hook 15 inward extends from inner side of each latch board 11 ofthe base plate 1. The top end of each latch hook is formed with areverse engaging hook 151. A pair of concaved engaging sockets 391 aredisposed at two ends of the clip plate 3. An arch bridge 392 is disposedacross the engaging socket. The fork legs 21 of the leaf spring 2 areformed with lances 26 for engaging with the latch boards 11 of the baseplate 1. The engaging hooks 151 of the latch hooks 15 are hooked withthe engaging sockets 391 of the clip plate 3 so as to assemble the baseplate 1, leaf spring 2 and clip plate 3 together.

Such hair clip cannot be adjusted in tightness between the base plate 1and the clip plate 3 according to the amount of the hair. However, suchhair clip can be opened at both ends. When it is desired to separate thebase plate 1 from the clip plate 3, as shown in FIG. 5C, the user onlyneeds to compress the latch boards 11 of the base plate 1, making thelatch boards 11 and the latch hooks 15 move inward so as to disengagethe engaging hooks 151 from the engaging sockets 391 of the clip plate3. The leaf spring 2 serves to resiliently bound the clip plate 3 fromthe base plate 1 to open the hair clip.

Please refer to FIGS. 6A and 6B. According to a second embodiment of thesecond aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 5A and 5B only in thestructure of two ends of the base plate 1 and the clip plate 3. Each endof the clip plate 3 is disposed with a downward projecting wavedengaging socket 393 and an upward projecting mountain-shaped convex 394over the engaging socket. The front end of the convex is higher than therear end thereof for the user's finger to easily push and depress. Thelatch hook 16 of the base plate 1 horizontally extends from a lateralside of the latch board 11 to form a U-shaped section and an uprightengaging hook 161 integrally connected therewith.

The engaging recesses 22 of the fork legs 21 of the leaf spring 2 areengaged with the latch boards 11 of the base plate 1 and the engaginghooks 161 of the base plate 1 are hooked with the waved engaging sockets393 of the clip plate 3 so as to assemble the base plate 1, leaf spring2 and clip plate 3 together.

Such hair clip 10 can be adjusted in tightness between the base plate 1and the clip plate 3 and can be opened at both ends in such a mannerthat the user can push the convex 394 with one finger (as shown in FIG.6D), making the engaging socket 393 move forward and making the engaginghook 161 hooked in one of the engaging sockets 393. When it is desiredto separate the base plate 1 from the clip plate 3, as shown in FIG. 6C,the user only needs to compress the latch boards 11 of the base plate 1,making the latch boards 11 and the latch hooks 16 move inward so as todisengage the engaging hooks 161 from the engaging sockets 393 of theclip plate 3. The leaf spring 2 serves to resiliently bound the clipplate 3 from the base plate 1 to open the hair clip.

Please refer to FIGS. 7A and 7B. According to a first embodiment of athird aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 5A and 5B only in thestructure of two ends of the base plate 1. An inward bent latch arm 17extends from inner side of each latch board 11. The latch arm 17includes a horizontal U-shaped section and an upright section 171 formedwith a vertical row of tenons 172. A fine slit 395 is defined betweenthe engaging socket 391 and the convex 392 of the clip plate 3 (as shownin FIG. 7D). The upright section 171 of the base plate 1 is upwardpassed through the slit 395 and the lances 26 of the fork legs 21 of theleaf spring 2 are engaged with the latch boards 11 of the base plate 1,whereby the tenons 172 are engaged with the engaging sockets 391 of theclip plate 3 to assemble the base plate 1, leaf spring 2 and clip plate3 together.

Such hair clip 10 can be adjusted in tightness between the base plate 1and the clip plate 3 according to the amount of the hair and can beopened at both ends in such a manner that the user can depress theconvex 392 of the clip plate 3 with one finger, making the engagingsocket 391 move downward and reducing the height of the engaging socket391 relative to the tenons 172. When it is desired to separate the baseplate 1 from the clip plate 3, as shown in FIG. 7C, the user only needsto compress the latch boards 11 of the base plate 1, making the latchboards 11 and the latch arms 17 move inward so as to disengage thetenons 172 from the engaging sockets 391 of the clip plate 3. The leafspring 2 serves to resiliently bound the clip plate 3 from the baseplate 1 to open the hair clip.

Please refer to FIGS. 8A and 8B. According to a second embodiment of athird aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from that of FIGS. 7A and 7B only in thestructure of two ends of the leaf spring 2 and the structure of the clipplate 3. Each end of the leaf spring 2 is formed with two V-shaped forklegs 21 and a curled leg 27 outward extending from the center of thefork legs. The center of the leaf spring 2 is a winding section 24. Eachend of the clip plate 3 is disposed with a pair of downward projectingarch rings 396 and an upward projecting arch bridge 397 between the archrings. A slit 395 is defined between the arch ring and the arch bridge397 (as shown in FIG. 8D). An upright lug 398 is disposed on inner sideof the arch ring 396 and formed with an inward projecting tenon 399 onthe surface. The center of the clip plate 3 is disposed with twoparallel waved plates 30. The lances 28 of the fork lugs 21 of the leafspring 2 serve to hook the latch boards of the base plate 1 and theupright sections 171 of the latch arms 17 of the base plate 1 passthrough the slits 395 of the clip plate 3 with the tenons 399 engaged inthe dents 173 of the upright sections 171 to assemble the base plate 1,leaf spring 2 and clip plate 3 together.

Such hair clip 10 can be adjusted in tightness between the base plate 1and the clip plate 3 according to the amount of the hair and can beopened at both ends in such a manner that the user can depress two endsof the clip plate 3, making the tenons 399 move downward and reducingthe height of the tenons 399 relative to the dents 173 of the base plate1. When it is desired to separate the base plate 1 from the clip plate3, as shown in FIG. 8C, the user only needs to compress the latch boards11 of the base plate 1, making the latch boards 11 and the latch arms 17move inward so as to disengage the tenons 399 from the dents 173. Theleaf spring 2 serves to resiliently bound the clip plate 3 from the baseplate 1 to open the hair clip.

Please refer to FIGS. 9A and 9B. According to a first embodiment of afourth aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from the preceding one in the structure oftwo ends of the base plate 1, leaf spring 2 and clip plate 3. Each endof the base plate 1 is disposed with a pair of upright hook posts 18. Arow of intercommunicated semicircular notches 181 are formed on one sideof each hook post. In addition, each fork leg 21 of each end of the leafspring 2 is disposed with a pair of upright latch boards 20 and a pairof hook posts 29 in front of the latch boards 20. A row ofintercommunicated semicircular notches 291 are disposed on one side ofeach hook post 29. Each end of the clip plate 3 is disposed with a pairof downward projecting arch engaging sockets 393 and an arch bridge 394between the engaging sockets 393. A projection 390 is disposed on outerside of each engaging socket 393.

The lances 26 of the fork legs 21 of the leaf spring 2 are hooked withthe hook posts 18 of the base plate 1 and the hook posts 18 cooperatewith the hook posts 29 of the leaf spring 2, whereby the semicircularnotches 181, 291 thereof mate with each other to form a row of circularholes (as shown in FIG. 9D), The projection 390 of the clip plate 3 isinserted into the circular hole and the user can depress the projection390 from the upper circular hole to the lower one so as to change thedistance between the base plate 1 and the clip plate 3. When it isdesired to separate the base plate 1 from the clip plate 3, the useronly needs to compress the latch boards 20 of the leaf spring 2 andinward bias the latch boards 20 and the hook posts 29, whereby thesemicircular notches 181, 291 no more mate with each other, permittingthe projection 390 of the clip plate 3 to be disengaged from thecircular hole. The leaf spring 2 serves to resiliently bound the clipplate 3 from the base plate 1 to open the hair clip.

Please refer to FIGS. 10A and 10B. According to a first embodiment of afifth aspect of the present invention, the hair clip 10 includes a baseplate 1, a leaf spring 2 and a clip plate 3.

This embodiment is different from the preceding one in the structure oftwo ends of the base plate 1, leaf spring 2 and clip plate 3. Each endof the base plate 1 is disposed with a pair of upright latch boards 11.A notch 111 is formed at front bottom section of each latch board 11 anda small pushing block 112 is integrally formed on inner side of thenotch. The free end of each fork leg 21 of the leaf spring 2 is disposedwith an upright latch post 211. A rack 212 is disposed on one side ofthe latch post 211. A curled leg 27 extends outward from the center ofthe fork legs 21. The center of the leaf spring 2 is disposed with awinding section 24. Each end of the clip plate 3 is disposed with a pairof arch engaging sockets 393. An arch bridge 394 is disposed between theengaging sockets 393. A slit 395 is defined between the arch bridge 394and the engaging socket 393. The bottom of the engaging socket 393 ispreferably a straight side 393 a. The center of the clip plate 3 isdisposed with two rows of waved plates 30.

The stopper blocks 29 on two sides of the fork legs 21 of the leafspring 2 are inserted into the notches 111 of the latch boards of thebase plate 1. The small pushing blocks 112 of the base plate 1 areengaged in the lowermost notch 212 a of the rack of the latch post 211.The latch post 211 is upward passed through the slit 395 of the clipplate 3. The bottom of the engaging socket 393 is engaged with the rack212 to achieve a locking effect. When it is desired to adjust thedistance between the base plate 1 and the clip plate 3, the user onlyneeds to depress the arch bridges 394 of the clip plate 3 and reduce theheight of the base plate 1 relative to the clip plate 3. When it isdesired to separate the base plate 1 from the clip plate 3, as shown inFIG. 10C, the user only needs to compress the latch boards 11 of thebase plate 1 and inward push the latch posts 211 of the leaf spring 2via the small pushing blocks 112 so as to disengage the racks 212 fromthe engaging sockets 393 of the clip plate 3. The leaf spring 2 servesto resiliently bound the clip plate 3 from the base plate 1 to open thehair clip.

FIGS. 11A and 11B show an embodiment of the present invention, in whichthe hair clip is openable only at one end. The openable ends of the baseplate 1, leaf spring 2 and clip plate 3 are identical to the abovestructures shown in FIGS. 1A and 1B and will not be repeatedlydescribed. The other ends of the base plate 1, leaf spring 2 and clipplate 3 are conventional structures. The latch board 11 of latch boardend 1(b) of the base plate 1 is formed with an orifice 113 on upperside. A tenon 301 is formed on one side of the latch lug end 3(b) of theclip plate 3. The tenon 301 is fitted into the orifice 113, whereby theclip plate 3 can be rotated about the tenon 301. A triangular stopperplate 302 of the clip plate 3 is stopped by the semicircular projection114 on upper side of the latch board 11. The V-shaped fork legs 21 ofthe leaf spring 2 are stopped under the latch board 11 of the base plate1 via the stopper block 29. The leaf spring 2 resiliently pushes andlifts the clip plate 3, whereby the clip plate 3 can be rotated through180 degrees about the pivot end.

It is to be understood that the above description and drawings are onlyused for illustrating some embodiments of the present invention, notintended to limit the scope thereof. Any variation and derivation fromthe above description and drawings should be included in the scope ofthe present invention.

What is claimed is:
 1. A stage-by-stage tightness-adjustable hair clipstructure comprising a base plate, a leaf spring and a clip plate, eachend of the base plate being disposed with a pair of latch boards, eachend of the leaf spring being disposed with a pair of fork legs, each endof the clip plate being disposed with a pair of latch lugs, wherein: thelatch boards, fork legs and latch lugs are assembled to form an openableend or a pivot end, whereby the hair clip can be opened at both ends orat a single end.
 2. A hair clip structure as claimed in claim 1, whereineach latch board is formed with a row of intercommunicated latch holes,the latch lugs defining a fissure therebetween, a downward extending lugbeing disposed on a front lower side of each latch lug, a tenon beingformed on surface of the downward extending lug, the fork legs of theleaf spring being inserted under the latch boards of the base plate withroot sections of the latch boards engaged in engaging recesses of thefork legs, a middle arch section of the leaf spring being inserted intoa central slot of the clip plate, tenon of the clip plate beingselectively inserted into the latch holes of the latch boards so as toassemble the clip plate and the leaf spring with the base plate.
 3. Ahair clip structure as claimed in claim 2, wherein each latch lug isdisposed near the end of the clip plate and the downward extending lugis disposed between the latch lug and the end, an arch bridge beingdisposed at the end of and across the fissure of the clip plate.
 4. Ahair clip structure as claimed in claim 1, wherein each end of the baseplate is formed with a bight folding plate, the center of the foldingplate being formed with a projecting depression key, the latch boardsbeing arched inward, a front end of the folding plate being insertedunder and between the two latch boards, a stopper block being disposedon a lateral side of each fork leg of the leaf spring, each end of theclip plate being disposed with a convex, each side of the convex beingdisposed with a lug having a tenon on its surface.
 5. A hair clipstructure as claimed in claim 1, wherein the fork legs of the leafspring are formed with reverse hook legs and the center of the leafspring is disposed with a well resilient winding section, the hook legsbeing hooked at lower ends of the latch boards of the base plate, a pairof elongated oblique latch lugs being disposed at each end of the clipplate to define a fissure, each side of the latch lug being disposedwith a tenon for adjustably inserting into the latch holes of the latchboard.
 6. A hair clip structure as claimed in claim 1, wherein a bentlatch hook extends inward from inner side of each latch board of thebase plate, a top end of each latch hook being formed with a reverseengaging hook, a pair of concaved engaging sockets being disposed at twoends of the clip plate, an arch bridge being disposed across eachengaging socket, the fork legs of the leaf spring being formed withlances for engaging with the latch boards of the base plate.
 7. A hairclip structure as claimed in claim 6, wherein each end of the clip plateis disposed with a pair of downward projecting waved engaging socketsand an upward projecting convex over the engaging sockets, a front endof the convex being higher than a rear end thereof, the latch hook ofthe base plate extending horizontally from a lateral side of the latchboard to form a U-shaped section and an upright engaging hook integrallyconnected therewith, each fork leg of the leaf spring being disposedwith an engaging recess.
 8. A hair clip structure as claimed in claim 1,wherein an inward bent latch arm extends from inner side of each latchboard, the latch arm including a horizontal U-shaped section and anupright section formed with a vertical row of tenons, the clip platebeing disposed with a convex and two arch engaging sockets on two sidesof the convex, a slit being defined between the engaging socket and theconvex of the clip plate, the upright section of the base plate beingpassed upward through the slit, the fork legs of the leaf spring beingdisposed with lances.
 9. A hair clip structure as claimed in claim 1,wherein each pair of fork legs is formed with two V-shaped fork legs anda curled leg extending outward from the center of the fork legs, thecenter of the leaf spring being a winding section, each end of the clipplate being disposed with a pair of downward projecting arch rings andan upward projecting arch bridge between the arch rings, a slit beingdefined between the arch ring and the arch bridge, a latch armhorizontally extending from an inner side of the latch board, includingan upright section formed with a row of dents, the upright section beingpassed through the slit of the clip plate with the tenon of the lugengaged in the dents of the upright sections.
 10. A hair clip structureas claimed in claim 1, wherein each end of the base plate is disposedwith a pair of upright hook posts, a row of intercommunicatedsemicircular notches being formed on one side of each hook post, eachfork leg of each end of the leaf spring being disposed with a pair ofupright latch boards and a pair of hook posts in front of the latchboards, a row of intercommunicated semicircular notches being disposedon one side of each hook post, each end of the clip plate being disposedwith a pair of downward projecting arch engaging sockets and an archbridge between the engaging sockets, a projection being disposed onouter side of each engaging socket, the hook posts of the fork legscooperating with the hook posts of the leaf spring, whereby thesemicircular notches thereof mate with each other to form a row ofcircular holes, the projection of the clip plate being selectivelyinserted into the circular holes.
 11. A hair clip structure as claimedin claim 1, wherein a notch is formed at front bottom section of eachlatch board and a small pushing block being integrally formed on innerside of the notch, a free end of each fork leg of the leaf spring beingdisposed with an upright latch post, a rack being disposed on one sideof the latch post, a curled leg extending outward from the center of thefork legs, the center of the leaf spring being disposed with a windingsection, each end of the clip plate being disposed with a pair of archengaging sockets, an arch bridge being disposed between the engagingsockets, a slit being defined between the arch bridge and the engagingsocket, the bottom of the engaging socket being a straight side, thecenter of the clip plate being disposed with two rows of waved plates,the small pushing blocks of the base plate being engaged in thelowermost notch of the rack of the latch post, the latch post beingpassed upward through the slit of the clip plate, the bottom of theengaging socket being engaged with the rack.